Trusty Cook TCBM3 Dead Blow Bossing Mallet, 3 lbs, 8" long head, 2.69" diameter, 14" handle.With 3 lbs of pure hot-cast polyurethane and steel shot durability, this dead blow bossing mallet will shape metal with maximum striking power. No mark, no spark action makes this mallet great for aircraft maintenance, auto repair, and metal fabrication.